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| author | Peter Rosin <peda@axentia.se> | 2018-05-16 09:16:47 +0200 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2018-05-29 20:30:49 +0200 |
| commit | 30a6475744cf11f31a296cb85b43bab40ebbea92 (patch) | |
| tree | 655bc88b8866daf280ac5d3d14e07959499ccaf4 /drivers/i2c/busses/i2c-axxia.c | |
| parent | ac6d5298f6af763b587495d62041fe57a2fb89e6 (diff) | |
| download | linux-30a6475744cf11f31a296cb85b43bab40ebbea92.tar.gz linux-30a6475744cf11f31a296cb85b43bab40ebbea92.tar.bz2 linux-30a6475744cf11f31a296cb85b43bab40ebbea92.zip | |
i2c: busses: make use of i2c_8bit_addr_from_msg
Because it looks neater.
For diolan, this allows factoring out some code that is now common
between if and else.
For eg20t, pch_i2c_writebytes is always called with a write in
msgs->flags, and pch_i2c_readbytes with a read.
For imx, i2c_imx_dma_write and i2c_imx_write are always called with a
write in msgs->flags, and i2c_imx_read with a read.
For qup, qup_i2c_write_tx_fifo_v1 is always called with a write in
qup->msg->flags.
For stu300, also restructure debug output for resends, since that
code as a result is only handling debug output.
Reviewed-by: Guenter Roeck <linux@roeck-us.net> [diolan]
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> [efm32 and imx]
Acked-by: Linus Walleij <linus.walleij@linaro.org> [stu300]
Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c/busses/i2c-axxia.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-axxia.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/i2c/busses/i2c-axxia.c b/drivers/i2c/busses/i2c-axxia.c index 12f92369888b..8e60048a33f8 100644 --- a/drivers/i2c/busses/i2c-axxia.c +++ b/drivers/i2c/busses/i2c-axxia.c @@ -351,13 +351,15 @@ static int axxia_i2c_xfer_msg(struct axxia_i2c_dev *idev, struct i2c_msg *msg) * addr_2: addr[7:0] */ addr_1 = 0xF0 | ((msg->addr >> 7) & 0x06); + if (i2c_m_rd(msg)) + addr_1 |= 1; /* Set the R/nW bit of the address */ addr_2 = msg->addr & 0xFF; } else { /* 7-bit address * addr_1: addr[6:0] | (R/nW) * addr_2: dont care */ - addr_1 = (msg->addr << 1) & 0xFF; + addr_1 = i2c_8bit_addr_from_msg(msg); addr_2 = 0; } @@ -365,7 +367,6 @@ static int axxia_i2c_xfer_msg(struct axxia_i2c_dev *idev, struct i2c_msg *msg) /* I2C read transfer */ rx_xfer = i2c_m_recv_len(msg) ? I2C_SMBUS_BLOCK_MAX : msg->len; tx_xfer = 0; - addr_1 |= 1; /* Set the R/nW bit of the address */ } else { /* I2C write transfer */ rx_xfer = 0; |